Àrea de contingut
Universitat de Barcelona
Listando Departament de Matemàtica Aplicada i Anàlisi por título
Mostrando ítems 1-20 de 44
Approximate algorithms for decentralized Supply Chain Formation
Supply chain formation involves determining the participants and the exchange of goods within a production network. Today’s companies operate autonomously, making local decisions, and coordinating ...
Assisted Hybrid Structured 3D Virtual Environments
The blending of digital technologies, such as artificial intelligence, interactive systems, 3D interfaces and the Internet is enabling new services for users. In particular, Hybrid Structured 3D Virtual Environments (VE) ...
Assisting the training of deep neural networks with applications to computer vision
Deep learning has recently been enjoying an increasing popularity due to its success in solving challenging tasks. In particular, deep learning has proven to be effective in a large variety of computer vision tasks, such ...
Boundedness of the Hilbert Transform on Weighted Lorentz Spaces
The main goal of this thesis is to characterize the weak-type (resp. strong-type) boundedness of the Hilbert transform H on weighted Lorentz spaces Λpu(w). The characterization is given in terms of some geometric ...
Capacitary function spaces and applications
The first part of the thesis is devoted to the analysis on a capacity space, with capacities as substitutes of measures in the study of function spaces. The goal is to extend to the associated function lattices some aspects ...
Computation of Normally Hyperbolic Invariant Manifolds
The subject of the theory of Dynamical Systems is the evolution of systems with respect to time. Hence, it has many applications to other areas of science, such as Physics, Biology, Economics, etc. and it also has interactions ...
Connectivity of Julia sets of transcendental meromorphic functions
Newton's method associated to a complex holomorphic function f is defined by the dynamical system Nf(z) = z – f(z) / f'(z). As a root-finding algorithm, a natural question is to understand the dynamics of Nf about its fixed ...
Context-aware quality of life telemonitoring for a novel healthcare paradigm
Our healthcare systems are facing sustainability challenges caused by a demographic shift with ageing, chronicity and disability growing in our society. A novel healthcare paradigm should be founded on 4P medicine: Preventive, ...
Contribució a l'estudi del problema restringit de 3 cossos per a valors petits del paràmetre de masses
El problema de 3 cossos i, en particular, el problema restringit de 3 cossos, ha estat i és, com diu Wintner, la pedra de toc per als matemàtics de les successives generacions de Newton fins ara. Cada generació ha emprat ...
Contribution to the Study of Fourier Methods for Quasi-Periodical Functions and the Vicinity of the Collinear Libration Points
This works has been organized in three parts. The first (Chapter 1 to 5) is dedicated to the development and study of a procedure for the accurate computation of frequencies, as well ans the related Fourier coefficients, ...
Contribution to the study of invariant manifolds and the splitting of separatrices of parabolic points
In general, when beginning to explore any scientific field, one focuses on the generic situations; that is, one centers on the behaviours that appear in “most” of the cases encountered in practice. This methodology ...
Design and evaluation of navigation and control algorithms for spacecraft formation flying missions
Formation flying offers space-dependent disciplines such as astrophysics, astrodynamics, and geodesy, to name a few, the possibility of creating large spaceborne sensors from an array of small spacecraft flying in formation. ...
Detection and Alignment of Vascular Structures in Intravascular Ultrasound using Pattern Recognition Techniques
In this thesis, several methods for the automatic analysis of Intravascular Ultrasound (IVUS) sequences are presented, aimed at assisting physicians in the diagnosis, the assessment of the intervention and the monitoring ...
Dynamical transport mechanisms in celestial mechanics and astrodynamics problems
L’objectiu d’aquesta tesi és afegir una petita fulla a l’arbre del coneixement. En particular a la branca del sistemes dinàmics. La teoria de sistemes dinàmics és la branca de les matemàtiques que estudia l’evolució del ...
Endpoint estimates via extrapolation theory
In this thesis, we study different variants of Rubio de Francia’s extrapolation that allow us to obtain estimates near L1. This theory is subsequently applied to deduce enpoint boundedness for the Bochner-Riesz operator ...
Estabilitat efectiva i tors invariants de sistemes hamiltonians quasi-integrables
La memòria recull contribucions a diversos aspectes del problema de l'estabilitat en sistemes hamiltonians quasi-integrables. Aquests aspectes inclouen resultats d'estabilitat efectiva, que comporten el confinament de ...
Estudi de sistemes dinàmics mitjançant la reducció de la seva dimensió
L'objectiu del treball és mostrar que alguns aspectes de certs sistemes dinàmics discrets bidimensionals poden ser estudiats mitjançant sistemes de dimensió 1 que corresponen a casos particulars o simplificacions. Els tres ...
Evolution of Sex-Ratio in Structured Population Dynamics
In this Thesis we address the study of some non-linear evolution equations (e.g. pde's) modelling the dynamics of sexually-reproducing structured populations, with special emphasis on biological evolution driven by natural ...
From pixels to gestures: learning visual representations for human analysis in color and depth data sequences
The visual analysis of humans from images is an important topic of interest due to its relevance to many computer vision applications like pedestrian detection, monitoring and surveillance, human-computer interaction, ...
Generalized Stacked Sequential Learning
Over the past few decades, machine learning (ML) algorithms have become a very useful tool in tasks where designing and programming explicit, rule-based algorithms are infeasible. Some examples of applications ...
